def bpf_ld_(obj, sz, md, jt, jf, k):
if sz == 3:
raise InstructionError(obj)
size = 32 >> sz
dst = env.A
adr = env.skb()
if md == 0: # IMM
src = env.cst(k.int(-1), 32)
elif md == 1: # ABS
src = env.mem(adr, size, disp=k.int(-1))
elif md == 2: # IND
src = env.mem(adr + env.X + k.int(-1), size)
elif md == 3 and k.int() < 16: # MEM
src = env.M[k.int()]
elif md == 4: # LEN
src = env.skb("len")
else:
raise InstructionError(obj)
obj.operands = [dst, src]
obj.type = type_data_processing
def bpf_ldx_(obj,sz,md,jt,jf,k):
if sz==3: raise InstructionError(obj)
size = 32>>sz
dst = env.X
adr = env.skb()
if md==0 and size==32: #IMM
src = env.cst(k.int(-1),32)
elif md==3 and size==32 and k.int()<16: #MEM
src = env.M[k.int()]
elif md==6 and size==8: #MSH
src = env.mem(adr,size,disp=k.int(-1))*4
else:
raise InstructionError(obj)
obj.operands = [dst,src]
obj.type = type_data_processing